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不同的起始培养在酸竹芽发酵过程中调节了组胺,物理化学性质,微生物群落和挥发性化合物
Xiaoyi Du1, Jun Li1, Yujuan Xu1
1Sericultural & Argi-Food Research Institute, Guangdong Academy of Agricultural Sciences/Key Laboratory of Functional Foods, Ministry of Agriculture and Rural Affairs/Guangdong Key Laboratory of Agricultural Products Processing, No. 133 Yiheng street., Dongguanzhuang road, Tianhe District, Guangzhou 510610, China.
International journal of food microbiology
|July 20, 2025
概括
高胺水平在酸性竹芽中很常见. 特定的Pediococcus pentosaceus菌株 (CYB89,CYC67) 有效地降低了组胺和酸盐,改善了产品质量和风味.
科学领域:
- 食品微生物学 食品微生物学
- 发酵科学 发酵科学
- 食品化学 食品化学
背景情况:
- 在商用酸竹芽中,胺污染是一个重大问题,许多样本超过了安全指南.
- 识别有效的起始培养对于控制组胺水平和确保食品安全至关重要.
研究的目的:
- 选和选强大的组胺降解乳酸细菌菌株,用于酸竹芽发酵.
- 评估选择的初始培养对胰岛素含量,微生物群落和挥发性风味化合物的影响.
主要方法:
- 在商业酸竹芽中测量组胺的量化.
- 对降解组胺的细菌进行查,包括Lactiplantibacillus plantarum和Pediococcus pentosaceus菌株.
- 使用选定菌株作为起始培养的发酵试验.
- 微生物社区继承和挥发性风味化合物的分析.
主要成果:
- 在16个商业酸竹芽样本中,有11个超出了美国FDA对50毫克/公斤的基因组胺指南.
- 佩迪奥科克斯 (Pediococcus pentosaceus) CYB89和P. pentosaceus CYC67表现出显著的组胺降解能力,降低了低于50毫克/公斤的水平.
- 这些菌株还减少了亚酸盐峰值,并对微生物群落结构产生了积极的影响,Pediococcus属与胰岛素生产有负相关性.
- 用P. pentosaceus CYC67发酵导致挥发性风味特征最类似于自然发酵产品.
结论:
- 佩迪奥科克斯 (Pediococcus pentosaceus) CYB89和P. pentosaceus CYC67是有效的初始培养物,可以降低酸竹芽中的胰岛素和酸盐.
- 这些菌株有助于理想的微生物社区动态和风味的发展.
- P. pentosaceus CYC67特别有前途,作为生产高质量,安全酸性竹芽的起始文化.
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